i think there's 2 different techniques for mimicking staff spinning with poi:
~ Use the centre point of your poi as the centre of the staff
~ Use the head of the poi as the centre of the staff

For ease, let's name these er... centre-point and head-point : cp & hp (actually, those are crap names, but will do for now).
For example propellors are centre-point moves
From my feeble dibblings in contact staff and poi, I've so far managed the following staff moves, based on Meg's lessons, as good a reference as any for contact staff moves. I might not have done them very well, but they are do-able.

Halo : cp
Backside entry half-steve: cp (Sorry, got to love that name... aka "neck wrap to arm contact roll")
Elbow-only conveyor belt: cp
Matrix (ish): hp
Fishtails: cp
Belly/back wrap - same hand catches - hp
Neck wrap to halo - cp

The "trouble" I find is that I can only do most of these with one poi (probably as they're single staff moves...).
Although this could raise the awesome possiblity of throwing one poi, contacting the other then catching into something sexy...